Honeycomb sandwich structure having dissimilar metal face sheets

Details Honeycomb sandwich structure having dissimilar metal face sheets Honeycomb sandwich structure having dissimilar metal face sheets

1984-08-27

1990-05-15

Nelson, Peter A.

Stock material or miscellaneous articles

Structurally defined web or sheet

Honeycomb-like

B32B 312

Patent

active

049257218

ABSTRACT:
The invention is a honeycomb structure suitable for use with cryogenic materials. In detail, the invention comprises a honeycomb sandwich structure 10 having a titanium core 14, a first face sheet 12 made of aluminum alloy suitable for high-temperature applications, and a second face sheet 16 made of titanium bonded together by a high-temperature thermoplastic adhesive. Preferably the core 14 is made of Ti-15V-3Cr-3Sn-3 aluminum, Ti-6Al-4V and/or Ti-3Al-2.5V. The first face sheet 12 is, preferably, made out of Al-8Fe-7Ce, Al-13Fe-4.6V, Al-1OFe-1Mo1V and Al-6Fe-6Ni-2Cr or other aluminum alloys suitable for use at temperatures in excess of 600.degree. F. The second face sheet 16 is, preferably, made of Ti-6Al-4V, Ti-6Al-2Sn-4Zr-2Mo or Ti-15V-3Cr-3Sn-3Al. Preferably, the adhesive 18a, 18b is a thermoplastic material such as polyetheretherketone, polyphenylquinoxaline or a polyamide-imide. The bond line may incorporate fiberglass sheets to ensure there is no galvanic action between the titanium core and the aluminum face sheet and to maintain a consistant thickness bond.

REFERENCES:
patent: 3600249 (1971-08-01), Jackson et al.
patent: 3811997 (1974-05-01), Yuan
patent: 3939024 (1976-02-01), Hoggatt
patent: 4249976 (1981-02-01), Hudson
patent: 4284443 (1981-08-01), Hilton

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